摘要
以某邻近地铁隧道深基坑开挖为对象,采用数值计算方法分析了基坑与隧道距离、隧道埋深对运营地铁隧道变形的影响。分析结果表明基坑与隧道距离小于20m时,基坑施工对隧道变形影响很大,但随着基坑与隧道距离增大隧道变形逐渐减小,超过40m后影响很小;当隧道与基坑距离较近时隧道主要发生竖向位移,而随着距离增大隧道结构主要发生水平位移。研究成果为实际工程设计提供了参考。
This paper takes a neighboring underpass tunnel deep foundation pit excavation as the object,using numerical calculation method to analyze the influence of the distance between the pit and the tunnel,tunnel burial depth on the operation of the subway tunnel deformation.Analysis results show that the distance between the pit and the tunnel is less than 20m,the pit construction has a great impact on the tunnel deformation,but as the distance between the pit and the tunnel increases the tunnel deformation gradually decreases,more than 40m after the impact is very small;when the distance between the tunnel and the foundation pit is close the tunnel mainly occurs vertical displacement,while with the distance increases,the tunnel structure mainly occurs horizontal displacement.The research results provide reference for practical engineering design.
作者
杨东雷
李杰
曹生辉
马哲峰
姚博
姚伟康
张浩翰
YANG Donglei;LI Jie;CAO Shenghui;MA Zhefeng;YAO Bo;YAO Weikang;ZHANG Haohan(China Railway First Group Co.,Ltd.,Xi’an 710000,China;Hangzhou Metro Group Co.,Ltd.,Hangzhou 310000,China;Zhejiang University of Technology,Hangzhou 310034,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S01期2554-2560,共7页
Building Structure
关键词
深基坑
隧道位置
有限元分析
结构变形
deep foundation pit
tunnel location
finite element analysis
structural deformation
